Commonly used output devices for computers include
Commonly used output devices for computers include monitors, printers, plotters, image output systems, voice output systems, and magnetic recording devices.
Output devices are used to receive computer data output display, printing, sound, control peripheral equipment operation. It is also the data or information of various calculation results in the form of numbers, characters, images, sound and other forms of expression.
Output device is a general term for a device that sends information from the outside world to a computer and a device that returns processing results to the outside world. These returned results may be as the user can visually experience them.
Or as inputs to other devices controlled by that computer: in the case of a robot, the output of the controlling computer is essentially the robot itself, e.g., performing various behaviors. The function of an output device is to output information processed by the computer in memory in a form that can be received by a person or other device.
Future of development:
The first generation of computers had a very limited variety of output devices. The usual input device was a card reader for punched cards, which was used to import instructions and data into memory, while the output device for storing results was usually a magnetic tape. The richness of input and output devices has increased with advances in technology.
Taking a personal computer as an example: the keyboard and mouse are the main tools used by the user to input information directly into the computer, while monitors, printers, loudspeakers, and headphones return processing results. There are also many input devices that can accept other different kinds of information, such as digital cameras that can input images.
Of the input and output devices, two categories are noteworthy: the first is secondary storage devices, such as hard disks, CD-ROMs, or other devices that are slow but have a high capacity.
The second is computer network access devices, through which the value of computers is greatly enhanced by direct data transfer between them. The Internet has enabled tens of millions of computers to send all types of data to and from each other.
What are the computer output devices
Computer output devices are monitors, printers, fax machines, projectors, scanners and so on.
Monitor is one of the main output devices of the computer, used to display the information inside the computer in the form of images to the user. Monitors are generally divided into CRT (cathode ray tube) and LCD (liquid crystal display) two.
CRT monitors display images by firing an electron beam from an electron gun onto a fluorescent screen, while LCD monitors display images by controlling the passage and blocking of light through a liquid crystal panel. The resolution and refresh rate of a monitor are the main parameters that affect its performance.
Printer is a computer output device, used to computer information in the form of paper output. Printers are generally categorized as pin printers, inkjet printers, laser printers and so on.
Pin printers produce dot-matrix graphics by striking the ribbon and paper with needles in the print head; inkjet printers spray ink onto the paper to form an image by means of a nozzle; and laser printers scan the charge on the toner cartridge by means of a laser to form an image on the paper. Parameters such as the printer’s print speed, resolution and toner capacity affect its performance.
3, fax machine
The fax machine is a computer output device that transmits over a telephone line, converting information on a paper document into electrical signals that can be transmitted over a telephone line to a distant location and then converted into an image file.
Fax machines are generally categorized into two types: thermal paper fax machines and plain paper fax machines. Thermal paper fax machines form images through a chemical reaction on the thermal paper, while plain paper fax machines form images through a photoreceptor drum on a drum. Parameters such as transmission speed, clarity and reliability of the fax machine affect its performance.
Projector is an output device that displays the information inside the computer in the form of a projection to multiple people. Projectors are generally divided into CRT projectors and LCD projectors.
CRT projectors display images by firing an electron beam through an electron gun to hit a fluorescent screen, while LCD projectors display images by controlling the passage and blocking of light through an LCD panel. Parameters such as resolution, brightness, contrast and projection distance of the projector affect its performance.
Scanner is a computer output device that converts information on paper documents into digital information. Scanners are generally divided into flatbed scanners and drum scanners.
Flatbed scanners optically convert the image on a document into a digital signal, while drum scanners form an image through a light-sensitive drum on a drum. Parameters such as resolution, scanning speed, and color reproduction affect the performance of the scanner.
Computer commonly used output devices which
Specific devices are as follows:
Output device (OutputDevice) is the terminal equipment of the computer hardware system, used to receive computer data output display, printing, sound, control peripheral device operation. Also put a variety of counting output device types are also many. Computer commonly used output devices are a variety of printers, chisel hole output devices, display devices and plotters. Printers, monitors, speakers, etc. are output devices.
Computer (computer) commonly known as computer, is a modern electronic calculator for high-speed calculations, can be numerical calculations, but also logical calculations, but also has a memory function. Is able to run in accordance with the program, automatic, high-speed processing of large amounts of data of modern intelligent electronic equipment. Can be divided into supercomputers, industrial control computers, network computers, personal computers, embedded computers, the more advanced computers have biological computers, photonic computers, quantum computers and so on. Composed of hardware systems and software systems, the computer without any software installed is called bare metal.
What belongs to output devices
What belongs to output devices are monitors, printers, plotters, image output systems, voice output systems, magnetic recording devices, etc. Output devices are the terminal devices of computer hardware systems, which represent the data or information of various computation results in the form of numbers, characters, images, and sounds.
The output device is the result of calculation or processing or intermediate results in a variety of forms that people can recognize expressed in the form of numbers, symbols, letters, etc., so the input and output devices play a role in connecting people and machines. Commonly, there are monitors, printers, plotters, image output systems, voice output systems, magnetic recording devices and so on.
Printer use precautions
1, do not use flammable solutions such as alcohol, benzene or thinner to clean the printer. Many people believe that the cleaning power of alcohol, so when cleaning the printer love to use it, do not know that because alcohol is a flammable solution, if the printer is open in the case of cleaning it is easy to contact the printer’s internal electronic parts, which may cause the parts burned out or even fire or electric shock.
2. When the power cord is tied or knotted, do not use the printer. When the power cord is tied or knotted, the resistance of the current through will be greatly increased, resulting in excessive resistance, which may result in a short circuit.
3, prohibit the printer is inserted into the power outlet shared with other devices with greater power, and may not be placed near the electromagnetic sound of the equipment (such as fluorescent lamps, etc.), between the printer and such equipment to maintain at least 15 centimeters of space, because if the proximity of the fluorescent lamps and other electromagnetic noise generated by the printer may cause the printer does not work properly, and the electromagnetic noise generated may cause the printer to malfunction.
4. Do not place metal objects (paper clips, staples, etc.) or flammable solvents (alcohol, thinner, etc.) on top of the printer.
What are the output devices of a computer?
A monitor and D printer.
Common output devices for computers